Caliper disc brake of a vehicle, in particular a commercial vehicle, and holding-down spring of such a brake

A caliper disc brake of a vehicle, with

• a brake disc having an axis of rotation (A),
• a brake caliper (20),
• a brake support plate (22),
• a force transmission element, such as, for example, a pad support (24, 26) and/or a pressure plate (28), which is guided and supported in a well of the brake caliper or of the brake support plate,
• a holding-down spring (30, 32, 34) for holding down the force transmission element, and
• a holding-down device (36), which
• is held and supported on the caliper by a holding device (38, 40),
• preloads the holding-down spring radially against the force transmission device, and
• preloads the holding-down spring tangentially in the direction of rotation (D) against the force transmission device during forward travel,
• wherein the holding-down device has a center line (M) parallel to the axis of rotation,
• wherein the holding-down spring (30, 32, 34) has two identical spring legs (76, 78) and a base that form a trapezoidal central region (80) which is located in-between and projects radially inward, wherein the two spring legs of the trapezoidal region each enclose an angle (α) of more than 95° with the base in a relaxed state and an angle (β) of less than 85° with a respectively adjacent spring leg.